ucmpdi2.c revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1/* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------===
2 *
3 *                     The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
7 *
8 * ===----------------------------------------------------------------------===
9 *
10 * This file implements __ucmpdi2 for the compiler_rt library.
11 *
12 * ===----------------------------------------------------------------------===
13 */
14
15#include "int_lib.h"
16
17/* Returns:  if (a <  b) returns 0
18 *           if (a == b) returns 1
19 *           if (a >  b) returns 2
20 */
21
22COMPILER_RT_ABI si_int
23__ucmpdi2(du_int a, du_int b)
24{
25    udwords x;
26    x.all = a;
27    udwords y;
28    y.all = b;
29    if (x.s.high < y.s.high)
30        return 0;
31    if (x.s.high > y.s.high)
32        return 2;
33    if (x.s.low < y.s.low)
34        return 0;
35    if (x.s.low > y.s.low)
36        return 2;
37    return 1;
38}
39
40#ifdef __ARM_EABI__
41/* Returns: if (a <  b) returns -1
42*           if (a == b) returns  0
43*           if (a >  b) returns  1
44*/
45COMPILER_RT_ABI si_int
46__aeabi_ulcmp(di_int a, di_int b)
47{
48	return __ucmpdi2(a, b) - 1;
49}
50#endif
51
52